Your question is the same as mine, and your priorities also seem to correlate to mine. Well, so far I've tracked these contestants:
-ZMF Auteurs: people recommended them to me a few times. Their measurement by crinacle indicate good tonal balance, but his personal rating is lower than that of the 600 or the 650; also, being made of wood, I'm heavily skeptical of unit to unit variation, as it is not a well behaved and predictable material, ZMFs experience with it notwithstanding;
- Focal Elex: these are the most clear choices (though not so clear, pun intended); they measure really well, are acclaimed to have that punchy excursive bass that people attribute to Focals, and are airy and very open. Their main problem is QC, which seems to be non existant, you'd be lucky to have them working for more than a year or so the userbase tells.
- Focal Clears: discontinnued but can be found in the used market. They don't measure stellar by the harman target neither here nor there, but people seem to praise them well enough.
-Focal Clear MGs: same as above, just tuned more warmly (and nasally). If you are brazilian like me, as per your username, you can check Drummond's review of them on his channel on youtube, Mind the Headphone. He considers them the logical upgrade to the HD650s, and although that doesn't correlate well to measurements, I trust his opinions enough by my experience with his recommendations AND the products he developed to give him credit. My only suspicion about it, aside from the objective data, is that he maybe was comparing the MGs to an "idea" of the HD650, that idea that they are warm and veiled (some really are, unit variance since it's launch is crazy); which doesn't bode well when ABing them with the HD600 hands on; MGs FR also seem to suggest this.
-HD 800S with EQ: king of technicalities, beggar of tonality. If you use parametric EQ you may reach our desire easily, as even Amirm and Oratory likes them EQed. My only skepticism about them is the possibility of them losing the big soundstage and technical notes when you use heavy EQ, as there is some evidence aside from the angled drivers that the space created is due to the way they peak on lower treble. Other users may tell their tale better on this.
About the Hifimans: they may suit your ears better than they did mine, but personally I found the EDXS much colder than my Senns, technicalities aside. Their tonality and my abysmal experience with the headband made me not use them very much, so I ended up selling.
All in all, the choice is yours, and the advice I follow in this trail may very well suit you too: don't think in terms of definitive upgrades, they simply don't exist above "mid-fi". Be suspicious of people telling you that something is leaps and bounds better than the other, specially when considering "technicalities", which is such a murky subject. My personal choice for an upgrade now is the 800S because I'm not at all afraid of EQ, but I'll never sell my 6XXs even when getting them, as I know headphones are not like eletronics.